HP4402.book : chapter2.fm 8 Tue Apr 22 15:20:23 1997
Power Meter Operation
Making Measurements with the HP E-Series Power Sensors
2-8 HP EPM-441A User’s Guide
Making Measurements with the HP E-Series Power
Sensors
This section describes how to make continuous wave measurements using
the HP E-series power sensors. The HP E-series power sensors have their
sensor calibration tables stored in EEPROM. This allows the frequency
and calibration data to be downloaded to the power meter automatically.
To make measurements, perform the following steps:
1. Zero and calibrate the power meter.
2. Set the frequency for the signal you want to measure.
3. Take a reading.
Procedure
The following procedure details how to make a measurement on channel A
of the power meter.
1. Ensure that no power is applied to the power sensor.
2. Press .
3. Press . During zeroing, which takes approximately 10
seconds, the wait symbol is displayed.
4. Connect the power sensor to the POWER REF output.
5. Press to calibrate the power meter. During calibration the
wait symbol is displayed. (The power meter automatically turns
on the POWER REF output.)
6. Press . The current setting of the frequency is displayed
under the softkey.
7. To change this setting press . The power meter displays the
frequency in a pop up window. Modify this frequency (see below)
as desired.
■ Use or to modify the digit on which the cursor is
currently positioned.
■ Use or to move to other digits.
8. To confirm your choice press the appropriate frequency units.
9. Connect the power sensor to the signal to be measured.
10. The measurement result is now displayed.
Zero
Cal
Zero
Cal
Frequency
Cal Fac
Freq
Freq
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